Step 13 : Here, select specific options in Age Ratings and Rating Questionnaire, and click on Save and Generate

Step 14 : The Age Rating certificate will be created. Just, click on Continue to proceed

Step 15 : Click on Packages

Step 16 : Browse or Drag and Drop your app .xap files here. You need to send an email to Appy Pie Submission Team at support@Appy Pie.com to get your app .xap files

Step 17 : Once you have successfully uploaded the app package files, a few options in Device family will appear. Uncheck Windows 10 Desktop, Windows 10 Team, Windows 10 Holographic, and leave Windows 10 mobile as it is